5. Josh Gad
Without a doubt Josh Gad is the least known celebrity on this list but he's here because he also had one of the strongest opinions on the subject. He's really only known for supporting roles in comedies although this statement may spread some awareness in his direction;
Affleck is going to kill this. Mark my words. As a huge fan of Bale, I completely think this is a genius new way to take it.
For what it's worth, I actually like Josh Gad. He was recently in Jobs as Steve Wozniak which turned out to be the only well executed aspect of that movie, and will have a starring role in Disney's upcoming animated feature Frozen.